Fully automatic door lock

Abstract

The present invention relates to a fully automatic door lock, comprising a lock body, wherein the lock body is equipped with a motor, a gear set, a rack assembly, a cross lock tongue, a striker tongue, a square lock tongue, a roller assembly, a push rod, a shift lever, a shift piece, a cross lock tongue return spring, a striker tongue return spring, a shift lever return spring and a roller assembly return spring, a lock core and a push plate. If the electric unlocking part fails, the user can unlock the door mechanically, so that the door lock has two unlocking modes: electric unlocking and mechanical unlocking, which greatly improves the practicality of the door lock.

Description

Technical Field

[0001] The present invention relates to the field of locks, and in particular to a fully automatic door lock. Background Art

[0002] In existing fully automatic door locks, after the user unlocks the door, the motor starts, and the motor drives the parts in the lock body through the reduction gear set, causing the square lock tongue to automatically extend out of the lock body to achieve automatic locking or automatically retract into the lock body to achieve automatic unlocking.

[0003] In the above-mentioned fully automatic door lock, only the square lock tongue has the locking function, and the cross lock tongue does not have the locking function, resulting in poor security of the existing fully automatic door lock.

[0004] Furthermore, the above-mentioned fully automatic door lock has a relatively complex structure. If the reduction gear set is stuck, it cannot be locked or unlocked, and the failure rate is high. Summary of the Invention

[0005] The invention aims to provide a fully automatic door lock with a cross lock tongue having a locking function, automatic locking, automatic unlocking, mechanical locking and mechanical unlocking.

[0006] The object of the present invention is achieved like this:

[0007] A fully automatic door lock, comprising a lock body, which is equipped with a motor, a gear set, a rack assembly, a cross lock tongue, a striker tongue, a square lock tongue, a roller assembly, a push rod, a shift lever, a shift piece, a cross lock tongue return spring, a striker tongue return spring, a shift lever return spring, a roller assembly return spring, a lock core, and a push plate, and is characterized by:

[0008] The cross lock tongue is movably arranged in the lock body, one end of the cross lock tongue reset spring is connected to the lock body, and the other end of the cross lock tongue reset spring is connected to the cross lock tongue. The cross lock tongue moves to extend or retract into the lock body, and the cross lock tongue reset spring constitutes a reset mechanism for the cross lock tongue;

[0009] The striker is movably arranged in the lock body, one end of the striker reset spring is connected to the lock body, and the other end of the striker reset spring is connected to the striker, and the striker reset spring constitutes a striker reset mechanism, and the striker extends or retracts into the lock body to trigger the start and stop of the motor;

[0010] The square lock tongue is movably arranged in the lock body, and the square lock tongue extends or retracts into the lock body;

[0011] The roller assembly is movably arranged in the lock body near the cross lock tongue, one end of the roller assembly reset spring is connected to the lock body, and the other end of the roller assembly reset spring is connected to the roller assembly, and the roller assembly reset spring constitutes a reset mechanism of the roller assembly;

[0012] The paddle is movably arranged in the lock body, one end of the paddle contacts the square lock tongue, and the other end of the paddle is engaged with the rack assembly;

[0013] The input end of the gear set is connected to the output part of the motor, the output end of the gear set is connected to the rack assembly, the push rod is provided on the rack assembly, the shift rod is located between the push rod and the roller assembly, the upper end of the shift rod abuts against the roller assembly, and the lower end of the shift rod abuts against the push rod, one end of the shift rod return spring is connected to the lock body, and the other end of the shift rod return spring is connected to the shift rod, and the shift rod return spring constitutes a reset mechanism of the shift rod;

[0014] The pushing plate is movably arranged on the lock body, the lock core is arranged in the lock body, the rotating part of the lock core is close to the paddle, one end of the pushing plate abuts against the rotating part of the lock core, and the other end of the pushing plate abuts against the rack assembly;

[0015] Automatic locking:

[0016] When the door is closed, the striker is compressed into the lock body, triggering the motor to start. The motor drives the rack assembly to move backward through the gear set, causing the rack assembly to drive the paddle to rotate forward. The paddle drives the square lock tongue to extend out of the lock body and lock the square lock tongue.

[0017] At the same time, the cross lock tongue is compressed into the lock body to push the roller assembly to reverse, and then the cross lock tongue is extended out of the lock body again under the elastic force of the cross lock tongue return spring;

[0018] As the cross lock tongue is compressed into the lock body, it pushes the push plate to release the action lock of the lever. The lever reset spring resets and drives the lever to reverse and release the action lock of the roller assembly. The roller assembly reset spring resets and drives the roller assembly to rotate forward, causing the roller assembly and the cross lock tongue to conflict with each other, thereby locking the state of the cross lock tongue, so that the cross lock tongue also has the locking function.

[0019] Automatic unlock:

[0020] When the door is opened, the motor starts and drives the rack assembly forward through the gear set. On the other hand, the rack assembly drives the paddle to reverse, and the paddle drives the square lock tongue to retract into the lock body and lock the square lock tongue.

[0021] On the other hand, the rack assembly drives the push rod to move forward, causing the push rod to push the lever to rotate forward, and the lever drives the roller assembly to reverse, causing the roller assembly to move away from the cross lock tongue. At this time, the cross lock tongue is in a free state;

[0022] Mechanical unlocking:

[0023] When the key is used to drive the rotating part of the lock core to rotate, the rotating part drives the push plate to move, and the push plate pushes the rack assembly to move, so that the rack assembly and the gear set are separated. When the rack assembly and the gear set are completely separated, the key is used to drive the rotating part of the lock core to continue to rotate, and the rotating part drives the paddle to rotate, and the paddle drives the square lock tongue to extend or retract into the lock body.

[0024] After the user closes the door, the lock body automatically executes the locking procedure to achieve automatic locking when closing the door. When the user successfully unlocks the door, the lock body automatically executes the unlocking procedure to achieve automatic unlocking, which is very convenient for users. Since the cross lock tongue has a locking function, when locking the door, the cross lock tongue and the square lock tongue are locked at the same time, greatly improving the security of the door lock.

[0025] Furthermore, since the cross lock tongue has a locking function and the built-in lever and roller assembly of the door lock are in motion, the cross lock tongue is in a locked state after the user closes the door. If the motor or gear set fails, the user closes the door and the door lock relies on the cross lock tongue to lock, always keeping the door locked, greatly improving safety.

[0026] When the motor or gear set fails or is stuck, the user uses the key to drive the lock cylinder to rotate. During the rotation of the lock cylinder, the lock cylinder first separates the rack assembly and the gear set, so that the rack assembly is not affected by the motor and gear set. As the lock cylinder continues to rotate, the lock cylinder drives the rack assembly to move, thereby putting the cross lock tongue in a locked or unlocked state. At the same time, the rack assembly drives the paddle to move during movement, and the paddle drives the square lock tongue to extend or retract into the lock body, so that the square lock tongue is in a locked or unlocked state. Therefore, if the electric unlocking part fails, the user can unlock it mechanically, so that the door lock has two unlocking methods: electric unlocking and mechanical unlocking, which greatly improves the practicality of the door lock.

[0027] The purpose of the present invention can also be solved by the following technical measures:

[0028] Furthermore, it also includes a blocking slide and a blocking slide return spring, the blocking slide is arranged on the push rod in a sliding manner, one end of the blocking slide return spring is connected to the push rod, and the other end of the blocking slide return spring is connected to the blocking slide, and the blocking slide return spring constitutes a return mechanism of the blocking slide, and when the shift rod is against or away from the blocking slide, the blocking slide locks or releases the rotation state of the shift rod.

[0029] Furthermore, it also includes a push-open plate, which is arranged in the lock body, one end of the push-open plate is connected to the cross lock tongue, and the other end of the push-open plate is facing the blocking slide. The cross lock tongue is compressed into the lock body to push the push-open plate, and the push-open plate moves to push the blocking slide.

[0030] Furthermore, the roller assembly includes a bracket and a roller, the bracket is rotatably arranged on the lock body, the roller is rotatably arranged on the bracket, the roller is close to the cross lock tongue, and the roller assembly reset spring is connected to the bracket.

[0031] Furthermore, the rack assembly includes a fixed plate, a movable rack, a movable rack return spring and a pin, the movable rack is provided with a transverse sliding groove, the movable rack is movably arranged at the bottom of the fixed plate, the pin passes through the transverse sliding groove and is locked on the fixed plate, the sliding groove limits the sliding direction and sliding distance of the pin, thereby limiting the sliding direction and sliding distance of the movable rack, one end of the movable rack return spring is connected to the movable rack, and the other end of the movable rack return spring is connected to the fixed plate, and the movable rack return spring constitutes a return mechanism for the movable rack;

[0032] A fixed rack is extended below the fixed plate, the fixed rack and the movable rack are opposite to each other, the teeth of the movable rack face the center of the fixed plate, and the teeth of the fixed rack face the outside of the fixed plate;

[0033] The fixed plate is provided with a notch above the movable rack, and a protruding plate extends from the movable rack toward the notch.

[0034] The rack assembly includes a fixed rack and a movable rack. The user uses the key to rotate the lock cylinder, and the lock cylinder adjusts the position of the movable rack to separate the movable rack and the gear set, so that the rack assembly is not affected by the motor and the gear set, and the lock cylinder can be used to directly lock or unlock.

[0035] Furthermore, the gear set includes a first reduction gear, a second reduction gear and a third reduction gear, the second reduction gear includes a second upper tooth ring and a second lower tooth ring, the diameter of the second upper tooth ring is smaller than that of the second lower tooth ring, the third reduction gear includes a third upper tooth ring and a third lower tooth ring, the diameter of the third upper tooth ring is smaller than that of the third lower tooth ring, the motor is engaged with the first reduction gear, the first reduction gear is engaged with the second lower tooth ring, the second upper tooth ring is engaged with the third lower tooth ring, the third upper tooth ring is engaged with the movable rack, and the fixed rack is engaged with the paddle.

[0036] The rack assembly includes a fixed rack and a movable rack. The user uses the key to drive the lock core to rotate. The lock core pushes the movable rack through the push plate to adjust the position of the movable rack, so that the movable rack and the third upper tooth ring are separated, so that the rack assembly is not affected by the motor and the gear set, and the lock core can be used to directly lock or unlock.

[0037] Furthermore, it also includes a lock core and a pushing plate, the pushing plate is movably arranged on the lock body, the lock core is arranged in the lock body, the rotating part of the lock core is close to the paddle, one end of the pushing plate is against the rotating part of the lock core, and the other end of the pushing plate is against the protruding plate. When the rotating part of the lock core rotates, the rotating part drives the pushing plate to move, and the pushing plate pushes the protruding plate to move, thereby driving the movable rack to move, so that the movable rack and the third upper tooth ring are engaged or disengaged. When the movable rack and the third lower tooth ring are separated, the rotating part of the lock core continues to rotate, the rotating part drives the paddle to rotate, and the paddle drives the square lock tongue to extend or retract into the lock body.

[0038] Furthermore, it also includes a square lock tongue extended into position micro switch for monitoring whether the square lock tongue is extended out of the lock body, a square lock tongue retracted into position micro switch for monitoring whether the square lock tongue is retracted into the lock body, a cross lock tongue locking monitoring micro switch for monitoring whether the cross lock tongue is locked, a striker tongue in position monitoring micro switch for monitoring whether the striker tongue is retracted into the lock body, and a control system. The square lock tongue extended into position micro switch, the square lock tongue retracted into position micro switch, the cross lock tongue locking monitoring micro switch and the striker tongue in position monitoring micro switch are electrically connected to the control system respectively.

[0039] Whether the striker tongue is retracted into the lock body, whether the cross lock tongue is extended into the lock body, whether the cross lock tongue is retracted into the lock body, whether the square lock tongue is extended into the lock body and whether the square lock tongue is retracted into the lock body all trigger the corresponding micro switch, and the micro switch transmits relevant data to the control system. The control system emits corresponding prompt sounds (for example, reminding the user that the door has been closed, the door has been opened and the door has not been completely closed) to the user according to the striker tongue status, the square lock tongue status and the cross lock tongue status, thereby reminding the user. In addition, the control system can also count the number of times the door lock is locked and unlocked based on the data, and the user can obtain the data to meet the different needs of the user.

[0040] Furthermore, the square lock tongue is provided with a connecting portion, and a first trigger portion is provided on the connecting portion near the position of the square lock tongue. The micro switch for the square lock tongue to be extended into position is provided inside the lock body near the square lock tongue. When the square lock tongue is extended into position outside the lock body, the first trigger portion touches the micro switch for the square lock tongue to be extended into position, and the micro switch for the square lock tongue to be extended into position sends an extended into position signal to the control system.

[0041] A second trigger portion is provided at the end of the paddle, and a micro switch for the square lock tongue to be retracted into position is provided in the lock body near the paddle. When the square lock tongue is retracted into position in the lock body, the second trigger portion touches the micro switch for the square lock tongue to be retracted into position, and the micro switch for the square lock tongue to be extended into position sends a retracted into position signal to the control system.

[0042] The roller assembly is provided with a third trigger part, and the cross lock tongue locking monitoring micro switch is arranged in the lock body near the roller assembly. When the roller assembly and the cross lock tongue conflict with each other, the third trigger part touches the cross lock tongue locking monitoring micro switch, and the cross lock tongue locking monitoring micro switch sends a cross lock tongue locking signal to the control system.

[0043] Furthermore, it also includes a push plate, the micro switch for monitoring the position of the tongue in place is arranged in the lock body, the micro switch for monitoring the position of the tongue in place is electrically connected to the motor, the push plate is movably arranged in the lock body, the push plate is provided with a pushing part corresponding to the position of the micro switch for monitoring the position of the tongue in place, and the push plate is provided with a slot, the tongue is provided with a push block, the push block enters the slot, the tongue is retracted into the lock body, the push block drives the push plate to move backward, so that the pushing part is away from the micro switch for monitoring the position of the tongue in place, and the micro switch for monitoring the position of the tongue in place starts the motor.

[0044] The beneficial effects of the present invention are as follows:

[0045] The present invention automatically executes a locking procedure after the user closes the door, and automatically locks the door when closed. When the user successfully unlocks the door, the lock body automatically executes an unlocking procedure, and automatically unlocks the door, which is very convenient for users. Since the cross lock tongue has a locking function, when locking the door, the cross lock tongue and the square lock tongue are locked at the same time, which greatly improves the safety of the door lock.

[0046] The invention has a locking function because the cross lock tongue has a locking function, and the lever and roller assembly built into the door lock are in action, so that after the user closes the door, the cross lock tongue is in a locked state. If the motor or the gear set fails, the user closes the door and the door lock is locked by the cross lock tongue, and the door is always kept in a locked state, thereby greatly improving safety.

[0047] When the motor or gear set fails or is stuck, the user uses the key to drive the lock cylinder to rotate. During the rotation of the lock cylinder, the lock cylinder first separates the rack assembly and the gear set, so that the rack assembly is not affected by the motor and the gear set. When the lock cylinder continues to rotate, the lock cylinder drives the rack assembly to move, thereby putting the cross lock tongue into a locked state or an unlocked state. At the same time, the rack assembly drives the paddle to move during the movement, and the paddle drives the square lock tongue to extend or retract into the lock body, so that the square lock tongue is in a locked state or an unlocked state. Therefore, if the electric unlocking part fails, the user can unlock it mechanically, so that the door lock has two unlocking modes: electric unlocking and mechanical unlocking, which greatly improves the practicality of the door lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a schematic diagram of a fully automatic door lock (door open state).

[0049] Figure 2 This is the main view of the fully automatic door lock (door open, excluding part of the outer shell).

[0050] Figure 3 This is a cross-sectional view of a fully automatic door lock (door open).

[0051] Figure 4 This is the main view of the fully automatic door lock (door open, excluding the outer shell and some parts).

[0052] Figure 5 This is the rear view of the fully automatic door lock (door open, excluding the outer shell and some parts).

[0053] Figure 6 This is a schematic diagram of the fully automatic door lock from another angle (door open, excluding the outer shell).

[0054] Figure 7 This is a schematic diagram of the fully automatic door lock from another angle (door open, excluding the outer shell).

[0055] Figure 8 This is a schematic diagram of a fully automatic door lock (door closed).

[0056] Figure 9 This is the main view of the fully automatic door lock (door closed, excluding part of the outer shell).

[0057] Figure 10 This is a cross-sectional view of a fully automatic door lock (door closed).

[0058] Figure 11 This is the main view of the fully automatic door lock (door closed, excluding the outer shell and some parts).

[0059] Figure 12 This is the rear view of the fully automatic door lock (door closed, excluding the outer shell and some parts).

[0060] Figure 13 This is a schematic diagram of the fully automatic door lock from another angle (door closed, excluding the outer shell).

[0061] Figure 14 This is a schematic diagram of the fully automatic door lock from another angle (door closed, excluding the outer shell).

[0062] Figure 15 This is the main view of the fully automatic door lock (door open, excluding part of the outer shell, mechanically unlocked).

[0063] Figure 16 This is a cross-sectional view of a fully automatic door lock (door open, excluding part of the outer shell, mechanically unlocked).

[0064] Figure 17 This is the main view of the fully automatic door lock (door closed, excluding part of the outer shell, mechanically unlocked).

[0065] Figure 18 This is a cross-sectional view of a fully automatic door lock (door closed, excluding part of the outer shell, and mechanically unlocked).

[0066] Figure 19 Schematic diagram of the rack assembly of a fully automatic door lock (the movable rack is away from the fixed rack).

[0067] Figure 20 This is the main view of the rack assembly of the fully automatic door lock (the movable rack is away from the fixed rack).

[0068] Figure 21 Schematic diagram of the rack assembly of a fully automatic door lock (the movable rack is close to the fixed rack).

[0069] Figure 22 This is the main view of the rack assembly of the fully automatic door lock (the movable rack is close to the fixed rack).

[0070] Figure 23 This is an exploded view of the rack assembly of a fully automatic door lock. DETAILED DESCRIPTION

[0071] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0072] Example, combined with Figures 1 to 23 As shown, a fully automatic door lock includes a lock body 1, which has a built-in motor 11, a gear set 2, a rack assembly 3, a cross lock tongue 12, a striker tongue 13, a square lock tongue 14, a roller assembly 4, a push rod 5, a shift lever 6, a shift piece 7, a cross lock tongue return spring 121, a striker tongue return spring 131, a shift lever return spring 61, and a roller assembly return spring 43;

[0073] The cross lock tongue 12 is movably arranged in the lock body 1, and one end of the cross lock tongue reset spring 121 is connected to the lock body 1, and the other end of the cross lock tongue reset spring 121 is connected to the cross lock tongue 12. The cross lock tongue 12 extends or retracts into the lock body 1, and the cross lock tongue reset spring 121 constitutes a reset mechanism for the cross lock tongue 12;

[0074] The striker 13 is movably arranged in the lock body 1, and one end of the striker return spring 131 is connected to the lock body 1, and the other end of the striker return spring 131 is connected to the striker 13. The striker return spring 131 constitutes a reset mechanism of the striker 13. The striker 13 extends or retracts into the lock body 1 to trigger the start and stop of the motor 11.

[0075] The square lock tongue 14 is movably arranged in the lock body 1, and the square lock tongue 14 extends or retracts into the lock body 1;

[0076] The roller assembly 4 is movably arranged in the lock body 1 near the cross lock tongue 12, one end of the roller assembly reset spring 43 is connected to the lock body 1, and the other end of the roller assembly reset spring 43 is connected to the roller assembly 4, and the roller assembly reset spring 43 constitutes a reset mechanism of the roller assembly 4;

[0077] The paddle 7 is movably arranged in the lock body 1 , with one end of the paddle 7 contacting the square lock tongue 14 and the other end of the paddle 7 meshing with the rack assembly 3 ;

[0078] The input end of the gear set 2 is connected to the output part of the motor 11, and the output end of the gear set 2 is connected to the rack assembly 3. The push rod 5 is provided on the rack assembly 3. The shift rod 6 is located between the push rod 5 and the roller assembly 4. The upper end of the shift rod 6 abuts against the roller assembly 4, and the lower end of the shift rod 6 abuts against the push rod 5. One end of the shift rod return spring 61 is connected to the lock body 1, and the other end of the shift rod return spring 61 is connected to the shift rod 6. The shift rod return spring 61 constitutes a reset mechanism of the shift rod 6.

[0079] Furthermore, it also includes a blocking slide 8 and a blocking slide return spring 81. The blocking slide 8 is arranged on the push rod 5 in a sliding manner. One end of the blocking slide return spring 81 is connected to the push rod 5, and the other end of the blocking slide return spring 81 is connected to the blocking slide 8. The blocking slide return spring 81 constitutes a return mechanism of the blocking slide 8. When the shift rod 6 is against or away from the blocking slide 8, the blocking slide 8 locks or releases the rotation state of the shift rod 6.

[0080] Furthermore, it also includes a push-open plate 15, which is arranged in the lock body 1, one end of the push-open plate 15 is connected to the cross lock tongue 12, and the other end of the push-open plate 15 is directed toward the blocking slide 8, and the cross lock tongue 12 moves linearly to push the push-open plate 15 to push the blocking slide 8.

[0081] Furthermore, the roller assembly 4 includes a bracket 41 and a roller 42, the bracket 41 is rotatably arranged on the lock body 1, the roller 42 is rotatably arranged on the bracket 41, the roller 42 is close to the cross lock tongue 12, and the roller assembly reset spring 43 is connected to the bracket 41.

[0082] Furthermore, the pushing plate 16 is movably arranged on the lock body 1, the lock core 9 is arranged in the lock body 1, the rotating part 91 of the lock core 9 is close to the paddle 7, one end of the pushing plate 16 is against the rotating part 91 of the lock core 9, and the other end of the pushing plate 16 is against the rack assembly 3. When the rotating part 91 of the lock core 9 is rotated by the key, the rotating part 91 first drives the pushing plate 16 to move, and the pushing plate 16 pushes the rack assembly 3 to move, so that the rack assembly 3 and the gear set 2 are separated. When the rack assembly 3 and the gear set 2 are completely separated, the key is then used to drive the rotating part 91 of the lock core 9 to continue to rotate, the rotating part 91 drives the paddle 7 to rotate, and the paddle 7 drives the square lock tongue 14 to extend or retract into the lock body 1.

[0083] Furthermore, the rack assembly 3 includes a fixed plate 31, a movable rack 32, a movable rack return spring 321 and a pin 33. The movable rack 32 is provided with a transverse sliding groove 322. The movable rack 32 is movably arranged at the bottom of the fixed plate 31. The pin 33 passes through the transverse sliding groove 322 and is locked on the fixed plate 31. The sliding groove limits the sliding direction and sliding distance of the pin 33, thereby limiting the sliding direction and sliding distance of the movable rack 32. One end of the movable rack return spring 321 is connected to the movable rack 32, and the other end of the movable rack return spring 321 is connected to the fixed plate 31. The movable rack return spring 321 constitutes a return mechanism for the movable rack 32.

[0084] A fixed rack 34 extends downward from the fixed plate 31 . The fixed rack 34 and the movable rack 32 are opposite to each other. The teeth of the movable rack 32 face the center of the fixed plate 31 , while the teeth of the fixed rack 34 face the outside of the fixed plate 31 .

[0085] The fixed plate 31 is provided with a notch 311 above the movable rack 32 , and a protruding plate 323 extends from the movable rack 32 toward the notch 311 .

[0086] Furthermore, the gear group 2 includes a first reduction gear 21, a second reduction gear 22 and a third reduction gear 23, the second reduction gear 22 includes a second upper tooth ring 221 and a second lower tooth ring 222, the diameter of the second upper tooth ring 221 is smaller than that of the second lower tooth ring 222, the third reduction gear 23 includes a third upper tooth ring 231 and a third lower tooth ring 232, the diameter of the third upper tooth ring 231 is smaller than that of the third lower tooth ring 232, the motor 11 is engaged with the first reduction gear 21, the first reduction gear 21 is engaged with the second lower tooth ring 222, the second upper tooth ring 221 is engaged with the third lower tooth ring 232, the third upper tooth ring 231 is engaged with the movable rack 32, and the fixed rack 34 is engaged with the paddle 7.

[0087] Furthermore, it also includes a lock core 9 and a pushing plate 16, the pushing plate 16 is movably arranged on the lock body 1, the lock core 9 is arranged in the lock body 1, the rotating part 91 of the lock core 9 is close to the paddle 7, one end of the pushing plate 16 is against the rotating part 91 of the lock core 9, and the other end of the pushing plate 16 is against the protruding plate 323. When the rotating part 91 of the lock core 9 rotates, the rotating part 91 drives the pushing plate 16 to move, and the pushing plate 16 pushes the protruding plate 323 to move, thereby driving the movable rack 32 to move, so that the movable rack 32 and the third upper tooth ring 231 are engaged or disengaged. When the movable rack 32 and the third upper tooth ring 231 are separated, the rotating part 91 of the lock core 9 continues to rotate, the rotating part 91 drives the paddle 7 to rotate, and the paddle 7 drives the square lock tongue 14 to extend or retract into the lock body 1.

[0088] Furthermore, it also includes a square lock tongue extended into place micro switch 200 for monitoring whether the square lock tongue 14 is extended out of the lock body 1, a square lock tongue retracted into place micro switch 100 for monitoring whether the square lock tongue 14 is retracted into the lock body 1, a cross lock tongue locking monitoring micro switch 300 for monitoring whether the cross lock tongue 12 is locked, a striker tongue in place monitoring micro switch 400 for monitoring whether the striker tongue 13 is retracted into the lock body 1, and a control system. The square lock tongue extended into place micro switch 200, the square lock tongue retracted into place micro switch 100, the cross lock tongue locking monitoring micro switch 300 and the striker tongue in place monitoring micro switch 400 are respectively electrically connected to the control system.

[0089] Furthermore, the push plate 10 is included. The square lock tongue 14 is provided with a connecting portion 141. The connecting portion 141 is provided with a first trigger portion 142 near the square lock tongue 14. The micro switch 200 for the square lock tongue to be extended to the full position is provided in the lock body 1 near the square lock tongue 14. When the square lock tongue 14 is extended out of the lock body 1 to the full position, the first trigger portion 142 touches the micro switch 200 for the square lock tongue to be extended to the full position. The micro switch 200 for the square lock tongue to be extended to the full position sends an extended position signal to the control system.

[0090] A second trigger portion 71 is provided at the end of the paddle 7, and the micro switch 100 for the square lock tongue to be retracted into position is provided in the lock body 1 near the paddle 7. When the square lock tongue 14 is retracted into position in the lock body 1, the second trigger portion 71 touches the micro switch 100 for the square lock tongue to be retracted into position, and the micro switch 100 for the square lock tongue to be retracted into position sends a retracted into position signal to the control system.

[0091] The roller assembly 4 is provided with a third trigger portion 44, and the cross-bolt locking monitoring micro switch 300 is provided in the lock body 1 near the roller assembly 4. When the roller assembly 4 and the cross-bolt 12 contact each other, the third trigger portion 44 touches the cross-bolt locking monitoring micro switch 300, and the cross-bolt locking monitoring micro switch 300 sends a cross-bolt 12 locking signal to the control system;

[0092] The micro switch 400 for monitoring the tongue in position is arranged in the lock body 1, and the micro switch 400 for monitoring the tongue in position is electrically connected to the motor 11. The push plate 10 is movably arranged in the lock body 1, and the push plate 10 is provided with a pushing portion 101 corresponding to the position of the micro switch 400 for monitoring the tongue in position, and the push plate 10 is provided with a notch 102. The tongue 13 is provided with a pushing block 132, and the pushing block 132 enters the notch 102, and the tongue 13 is retracted into the lock body 1. The pushing block 132 drives the push plate 10 to move backward, so that the pushing portion 101 is away from the micro switch 400 for monitoring the tongue in position, and the micro switch 400 for monitoring the tongue in position starts the motor 11.

[0093] Automatic locking (driven by motor 11):

[0094] When the door is closed, the striker tongue 13 is compressed into the lock body 1, and the striker tongue 13 drives the push plate 10 to move backward, so that the pushing portion 101 is away from the striker tongue in position monitoring micro switch 400. The striker tongue in position monitoring micro switch 400 starts the motor 11, and the motor 11 drives the rack assembly 3 to move backward through the first reduction gear 21, the second reduction gear 22 and the third reduction gear 23. The rack assembly 3 drives the paddle 7 to rotate forward, and the paddle 7 drives the square lock tongue 14 to extend out of the lock body 1 and lock the square lock tongue 14;

[0095] At the same time, the cross lock tongue 12 is compressed into the lock body 1 to push the roller assembly 4 to reverse, and then the cross lock tongue 12 is extended out of the lock body 1 again under the elastic force of the cross lock tongue return spring 121;

[0096] Due to the linear motion of the cross lock tongue 12, the push plate 15 moves downward to push the blocking slide 8 to move, causing the blocking slide 8 and the shift lever 6 to separate, thereby releasing the action lock of the shift lever 6, and the shift lever return spring 61 resets and drives the shift lever 6 to reverse and release the action lock of the roller assembly 4, and the roller assembly return spring 43 resets and drives the roller assembly 4 to rotate forward, causing the roller assembly 4 and the cross lock tongue 12 to conflict with each other, thereby locking the state of the cross lock tongue 12, so that the cross lock tongue 12 also has a locking function.

[0097] Automatic unlocking (driven by motor 11):

[0098] After the user successfully unlocks the door, the motor 11 starts, and the motor 11 drives the rack assembly 3 to move forward through the first reduction gear 21, the second reduction gear 22 and the third reduction gear 23. On the one hand, the rack assembly 3 drives the paddle 7 to reverse, and the paddle 7 drives the square lock tongue 14 to retract into the lock body 1 and lock the square lock tongue 14;

[0099] On the other hand, the rack assembly 3 drives the push rod 5 to move forward, so that the blocking slide 8 of the push rod 5 pushes the lever 6 to rotate forward, and the lever 6 drives the roller assembly 4 to reverse, so that the roller assembly 4 moves away from the cross lock tongue 12. At this time, the cross lock tongue 12 is in a free state.

[0100] Mechanical locking (key controlled):

[0101] When the key is used to rotate the rotating part 91 of the lock core 9, the rotating part 91 drives the pushing plate 16 to move, and the pushing plate 16 pushes the protruding plate 323 to drive the movable rack 32 to move, so that the movable rack 32 and the third lower tooth ring 232 are separated, thereby separating the rack assembly 3 and the gear set 2.

[0102] Then, the key is used to drive the rotating part 91 of the lock core 9 to continue to rotate, and the rotating part 91 drives the paddle 7 to rotate forward. The paddle 7 drives the square lock tongue 14 to extend out of the lock body 1 to complete the locking and simultaneously drives the rack assembly 3 to move backward.

[0103] At the same time, the cross lock tongue 12 is compressed into the lock body 1 to push the roller assembly 4 to reverse, and then the cross lock tongue 12 is extended out of the lock body 1 again under the elastic force of the cross lock tongue return spring 121;

[0104] Due to the linear motion of the cross lock tongue 12, the push plate 15 moves downward to push the blocking slide 8 to move, causing the blocking slide 8 and the shift lever 6 to separate, thereby releasing the action lock of the shift lever 6, and the shift lever return spring 61 resets and drives the shift lever 6 to reverse and release the action lock of the roller assembly 4, and the roller assembly return spring 43 resets and drives the roller assembly 4 to rotate forward, causing the roller assembly 4 and the cross lock tongue 12 to conflict with each other, thereby locking the state of the cross lock tongue 12, so that the cross lock tongue 12 also has a locking function.

[0105] Mechanical unlocking (key control):

[0106] When the key is used to rotate the rotating part 91 of the lock core 9, the rotating part 91 drives the pushing plate 16 to move, and the pushing plate 16 pushes the protruding plate 323 to drive the movable rack 32 to move, so that the movable rack 32 and the third lower tooth ring 232 are separated, thereby separating the rack assembly 3 and the gear set 2.

[0107] Then, the key is used to drive the rotating part 91 of the lock core 9 to continue to rotate, and the rotating part 91 drives the paddle 7 to reverse, and the paddle 7 drives the square lock tongue 14 to retract into the lock body 1, completing the unlocking and simultaneously driving the rack assembly 3 to move forward.

[0108] On the one hand, the rack assembly 3 drives the paddle 7 to reverse, and the paddle 7 drives the square lock tongue 14 to retract into the lock body 1 and lock the square lock tongue 14;

[0109] On the other hand, the rack assembly 3 drives the push rod 5 to move forward, so that the blocking slide 8 of the push rod 5 pushes the lever 6 to rotate forward, and the lever 6 drives the roller assembly 4 to reverse, so that the roller assembly 4 moves away from the cross lock tongue 12. At this time, the cross lock tongue 12 is in a free state.

[0110] Door lock status monitoring:

[0111] Whether the striker tongue 13 is retracted into the lock body 1, whether the cross lock tongue 12 is extended into the lock body 1, whether the cross lock tongue 12 is retracted into the lock body 1, whether the square lock tongue 14 is extended into the lock body 1 and whether the square lock tongue 14 is retracted into the lock body 1 all trigger the corresponding micro switch, and the micro switch transmits relevant data to the control system. The control system emits corresponding prompt sounds (for example, reminding the user that the door has been closed, the door has been opened and the door is not completely closed) to the user according to the status of the striker tongue 13, the square lock tongue 14 and the cross lock tongue 12, thereby reminding the user. In addition, the control system can also count the number of times the door lock is locked and unlocked based on the data, and the user can obtain the data to meet the different needs of the user.

Claims

1. A fully automatic door lock, comprising a lock body, which is equipped with a motor, a gear set, a rack assembly, a cross lock bolt, a striker bolt, a square lock bolt, a roller assembly, a push rod, a shift lever, a shift piece, a cross lock bolt return spring, a striker bolt return spring, a shift lever return spring, a roller assembly return spring, a lock core, and a push plate, characterized in that: The cross lock tongue is movably arranged in the lock body, one end of the cross lock tongue reset spring is connected to the lock body, and the other end of the cross lock tongue reset spring is connected to the cross lock tongue. The cross lock tongue moves to extend or retract into the lock body, and the cross lock tongue reset spring constitutes a reset mechanism for the cross lock tongue; The striker is movably arranged in the lock body, one end of the striker reset spring is connected to the lock body, and the other end of the striker reset spring is connected to the striker, and the striker reset spring constitutes a striker reset mechanism, and the striker extends or retracts into the lock body to trigger the start and stop of the motor; The square lock tongue is movably arranged in the lock body, and the square lock tongue extends or retracts into the lock body; The roller assembly is movably arranged in the lock body near the cross lock tongue, one end of the roller assembly reset spring is connected to the lock body, and the other end of the roller assembly reset spring is connected to the roller assembly, and the roller assembly reset spring constitutes a reset mechanism of the roller assembly; The paddle is movably arranged in the lock body, one end of the paddle contacts the square lock tongue, and the other end of the paddle is engaged with the rack assembly; The input end of the gear set is connected to the output part of the motor, the output end of the gear set is connected to the rack assembly, the push rod is provided on the rack assembly, the shift rod is located between the push rod and the roller assembly, the upper end of the shift rod abuts against the roller assembly, and the lower end of the shift rod abuts against the push rod, one end of the shift rod return spring is connected to the lock body, and the other end of the shift rod return spring is connected to the shift rod, and the shift rod return spring constitutes a reset mechanism of the shift rod; The pushing plate is movably arranged on the lock body, the lock core is arranged in the lock body, the rotating part of the lock core is close to the paddle, one end of the pushing plate abuts against the rotating part of the lock core, and the other end of the pushing plate abuts against the rack assembly; Automatic locking: When the door is closed, the striker is compressed into the lock body, triggering the motor to start. The motor drives the rack assembly to move backward through the gear set, causing the rack assembly to drive the paddle to rotate forward. The paddle drives the square lock tongue to extend out of the lock body and lock the square lock tongue. At the same time, the cross lock tongue is compressed into the lock body to push the roller assembly to reverse, and then the cross lock tongue is extended out of the lock body again under the elastic force of the cross lock tongue return spring; Since the roller assembly reverses to release the action lock of the lever, the lever return spring resets and drives the lever to reverse to release the action lock of the roller assembly, and the roller assembly return spring resets and drives the roller assembly to rotate forward, causing the roller assembly and the cross lock tongue to conflict with each other, thereby locking the cross lock tongue and making the cross lock tongue also have the locking function; Automatic unlock: When the door is opened, the motor starts and drives the rack assembly forward through the gear set. On the other hand, the rack assembly drives the paddle to reverse, and the paddle drives the square lock tongue to retract into the lock body and lock the square lock tongue. On the other hand, the rack assembly drives the push rod to move forward, causing the push rod to push the lever to rotate forward, and the lever drives the roller assembly to reverse, causing the roller assembly to move away from the cross lock tongue. At this time, the cross lock tongue is in a free state; Mechanical unlocking: When the key is used to drive the rotating part of the lock core to rotate, the rotating part drives the push plate to move, and the push plate drives the rack assembly to move, so that the rack assembly and the gear assembly are separated. When the rack assembly and the gear assembly are completely separated, the key is used to drive the rotating part of the lock core to continue to rotate. The rotating part drives the paddle to rotate, and the paddle drives the square lock bolt to extend or retract into the lock body; The rack assembly includes a fixed plate, a movable rack, a movable rack return spring and a pin. The movable rack is provided with a transverse sliding groove. The movable rack is movably arranged at the bottom of the fixed plate. The pin passes through the transverse sliding groove and is locked on the fixed plate. The sliding groove limits the sliding direction and sliding distance of the pin, thereby limiting the sliding direction and sliding distance of the movable rack. One end of the movable rack return spring is connected to the movable rack, and the other end of the movable rack return spring is connected to the fixed plate. The movable rack return spring constitutes a return mechanism for the movable rack. A fixed rack is extended below the fixed plate, the fixed rack and the movable rack are opposite to each other, the teeth of the movable rack face the center of the fixed plate, and the teeth of the fixed rack face the outside of the fixed plate; The fixed plate is provided with a notch above the movable rack, and a protruding plate extends from the movable rack toward the notch.

2. The fully automatic door lock according to claim 1, characterized in that: It also includes a blocking slide and a blocking slide return spring, the blocking slide is arranged on the push rod in a sliding manner, one end of the blocking slide return spring is connected to the push rod, and the other end of the blocking slide return spring is connected to the blocking slide, and the blocking slide return spring constitutes a return mechanism of the blocking slide, when the shift rod is against or away from the blocking slide, the blocking slide locks or releases the rotation state of the shift rod.

3. The fully automatic door lock according to claim 2, characterized in that: It also includes a push-open plate, which is arranged in the lock body. One end of the push-open plate is connected to the cross lock tongue, and the other end of the push-open plate faces the blocking slide. The cross lock tongue is compressed into the lock body to push the push-open plate, and the push-open plate moves to push the blocking slide.

4. The fully automatic door lock according to claim 1, characterized in that: The roller assembly includes a bracket and a roller. The bracket is rotatably arranged on the lock body. The roller is rotatably arranged on the bracket. The roller is close to the cross lock tongue. The roller assembly reset spring is connected to the bracket.

5. The fully automatic door lock according to claim 1, characterized in that: The gear set includes a first reduction gear, a second reduction gear and a third reduction gear. The second reduction gear includes a second upper tooth ring and a second lower tooth ring. The diameter of the second upper tooth ring is smaller than that of the second lower tooth ring. The third reduction gear includes a third upper tooth ring and a third lower tooth ring. The diameter of the third upper tooth ring is smaller than that of the third lower tooth ring. The motor is engaged with the first reduction gear, the first reduction gear is engaged with the second lower tooth ring, the second upper tooth ring is engaged with the third lower tooth ring, the third upper tooth ring is engaged with the movable rack, and the fixed rack is engaged with the paddle.

6. The fully automatic door lock according to claim 5, characterized in that: The pushing plate is movably arranged on the lock body, and the lock core is arranged in the lock body. The rotating part of the lock core is close to the paddle. One end of the pushing plate abuts against the rotating part of the lock core, and the other end of the pushing plate abuts against the protruding plate. When the rotating part of the lock core rotates, the rotating part drives the pushing plate to move, and the pushing plate pushes the protruding plate to move, thereby driving the movable rack to move, so that the movable rack and the third upper tooth ring engage or disengage. When the movable rack and the third lower tooth ring are separated, the rotating part of the lock core continues to rotate, and the rotating part drives the paddle to rotate, and the paddle drives the square lock tongue to extend or retract into the lock body.

7. The fully automatic door lock according to claim 1, characterized in that: It also includes a square lock tongue extended into place micro switch for monitoring whether the square lock tongue is extended out of the lock body, a square lock tongue retracted into place micro switch for monitoring whether the square lock tongue is retracted into the lock body, a cross lock tongue locking monitoring micro switch for monitoring whether the cross lock tongue is locked, a striker tongue in place monitoring micro switch for monitoring whether the striker tongue is retracted into the lock body, and a control system. The square lock tongue extended into place micro switch, the square lock tongue retracted into place micro switch, the cross lock tongue locking monitoring micro switch and the striker tongue in place monitoring micro switch are electrically connected to the control system respectively.

8. The fully automatic door lock according to claim 7, characterized in that: The square lock tongue is provided with a connecting portion, and a first trigger portion is provided on the connecting portion near the position of the square lock tongue. The micro switch when the square lock tongue is extended into position is provided in the lock body near the square lock tongue. When the square lock tongue is extended into position outside the lock body, the first trigger portion touches the micro switch when the square lock tongue is extended into position, and the micro switch when the square lock tongue is extended into position sends an extended into position signal to the control system; A second trigger portion is provided at the end of the paddle, and a micro switch for the square lock tongue to be retracted into position is provided in the lock body near the paddle. When the square lock tongue is retracted into position in the lock body, the second trigger portion touches the micro switch for the square lock tongue to be retracted into position, and the micro switch for the square lock tongue to be extended into position sends a retracted into position signal to the control system. The roller assembly is provided with a third trigger part, and the cross lock tongue locking monitoring micro switch is arranged in the lock body near the roller assembly. When the roller assembly and the cross lock tongue conflict with each other, the third trigger part touches the cross lock tongue locking monitoring micro switch, and the cross lock tongue locking monitoring micro switch sends a cross lock tongue locking signal to the control system.

9. The fully automatic door lock according to claim 7, characterized in that: The push plate is also included. The micro switch for monitoring when the tongue is in place is arranged in the lock body. The micro switch for monitoring when the tongue is in place is electrically connected to the motor. The push plate is movably arranged in the lock body. The push plate is provided with a pushing portion corresponding to the position of the micro switch for monitoring when the tongue is in place. The push plate is provided with a slot. The tongue is provided with a pushing block. The pushing block enters the slot, the tongue is retracted into the lock body, and the pushing block drives the push plate to move backward, so that the pushing portion is away from the micro switch for monitoring when the tongue is in place. The micro switch for monitoring when the tongue is in place starts the motor.

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